div {
    margin: 20px 20px;
}
.btn1 {
    width: 80px;
    height: 25px;
    background-color:gray;
    color: white;
}
table button {
    width: 50px;
    height: 25px;
    background-color: aqua;
    color: gray;
}
table {
    background-color:gray;
}
th {
    width: 100px;
}
td {
   width: 100px;
   text-align: center;
   background-color: white;
}